Search Results

Search found 13478 results on 540 pages for 'linear programming'.

Page 269/540 | < Previous Page | 265 266 267 268 269 270 271 272 273 274 275 276  | Next Page >

  • Are all languages used within .net Equally performant?

    - by WeNeedAnswers
    I know the "Sales pitch" answer is yes to this question, but is it technically true. The Common Language Runtime (CLR) is designed as an intermediate language based on Imperative Programming (IP), but this has obvious implications when dealing with Declarative Programming (DP). So how efficient is a language based on a different paradigm than the Imperative Style when implemented in the CLR? I also get the feeling that the step to DP would incur an extra level of abstraction that might not model at all performant, would this be a fair comment? I have done some simple tests using F# and it all looks great, but am I missing something if the programs get more complex?

    Read the article

  • Access block level storage via kernel

    - by N 1.1
    How to access block level storage via the kernel (w/o using scsi libraries)? My intent is to implement a block level storage protocol over network for learning purpose, almost the same way SCSI works. Requests will be generated by initiator and sent to target (both userspace program) which makes call to kernel module and returns the data using TCP protocol to initiator. So far, I have managed to build a simple "Hello" module and run it (I am new at kernel programming), but unable to proceed with block access. After searching a lot, I found struct buffer_head * bread(int dev,int block) in linux/fs.h, but the compiler throws error. error: implicit declaration of function ‘bread’ Please help, also feel free to advice on starting with kernel programming. Thank you!

    Read the article

  • Web Application Translation, methods and tools

    - by CiscoIPPhone
    I've developed a web application. It needs to be translated to languages other than English in the future, and ideally the translators shouldn't need to know HTML/JS/C++ to provide the translation. The server side of the web application is written in C++ and the majority of the localised text is in the HTML files. My question is: What approaches are there to translating web applications? - Are there any existing tools that would enable a translator who doesn't understand HTML to translate a site? Should I write an application that extracts the localised text from a html file and can re-substitute translated text? Do you just provide the html file to your translators to be localised? I'm aware the question isn't strictly programming related but the solution may involve programming and it may require some software engineering.

    Read the article

  • How to redirect to a page using a button tag in html?

    - by Vlad Radulescu
    When I Click a button I want to get redirected to a page. The problem is...if I use the normal sintax , the button works fine, but If I apply some css to id by ussing # and .(classes) ,the button it`s not working any more ?! How can I keep my css and functionality at the same time ?! This is my code: <body> <input id="buttonrain" class="classname" type="button" onClick="window.location.href='rain.html'" value="Rain" /> <!--or <a href="rain.html" id="buttonrain" class="classname">Rain</a> still not working--> </body> CSS FILE html { min-width: 100%; min-height: 100%; } body{ width: 1024px; height:600px; background:white; margin:0px; padding:0px 0px; display:block; overflow:hidden; } .classname { -moz-box-shadow:inset 0px 1px 0px 0px #ffffff; -webkit-box-shadow:inset 0px 1px 0px 0px #ffffff; box-shadow:inset 0px 1px 0px 0px #ffffff; background:-webkit-gradient( linear, left top, left bottom, color-stop(0.05, #f0ea3c), color-stop(1, #dfdfdf) ); background:-moz-linear-gradient( center top, #f0ea3c 5%, #dfdfdf 100% ); filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#f0ea3c', endColorstr='#dfdfdf'); background-color:#f0ea3c; -moz-border-radius:6px; -webkit-border-radius:6px; border-radius:6px; border:1px solid #dcdcdc; display:inline-block; color:#0f000f; font-family:Verdana; font-size:15px; font-weight:bold; padding:18px 9px; text-decoration:none; text-shadow:1px 1px 0px #ffffff; position:relative; bottom:250px; }.classname:active { position:relative; top:1px; } #buttonrain{ left:80px; }

    Read the article

  • PHP OOP properity constant usage

    - by Misiur
    Hi there. I'm really new to OOP. I'm even not a newbie - I'm noob. So. I want to transfer my pseudo-CMS from "normal" programming, into OOP programming system. And so: private static $dsn = DB_TYPE.':host='.DB_HOST.';dbname='.DB_NAME; What here causes problem? Usage of constraints? I don't know. My editor (aptana studio) shows error after 1 constant. Thanks

    Read the article

  • libnet that properly calculates checksum on IPV6

    - by VeaEm
    I have recently started playing around with libnet and using it to generate IPV6 packets. I am very new at programming, however, I am quite happy with the library. I have one problem with it though. It seems that libnet currently does not have the ability to properly calculate checksums on IPV6 packets. Being so new to programming, I am not yet capable of fixing this problem (although I am learning, so that one day I can). I am curious, has anyone run across a version of the library that can do this properly? Thanks!

    Read the article

  • Using Accelerometer in Wiimote for Physics Practicals

    - by Omar
    I have to develop some software in my school to utilize the accelerometer in the Wiimote for recording data from experiments, for example finding the acceleration and velocity of a moving object. I understand how the accelerometer values will be used but I am sort of stuck on the programming front. There is a set of things that I would like to do: Live streaming of data from the Wiimote via bluetooth Use the accelerometer values to find velocity and displacment via integration Plot a set of results Avoid the use of the infrared sensor on the Wiimote Please can anyone give me their thoughts on how to go about this. Also it would be great if people could direct me to existing projects that utizlise the wiimote. Also can someone suggest what would be the best programming language to use for this. My current bet is on using Visual basic. Any sort of help is greatly appretiated.

    Read the article

  • Using static vs. member find method on a STL set?

    - by B Johnson
    I am using a set because, i want to use the quick look up property of a sorted container such as a set. I am wondering if I have to use the find member method to get the benefit of a sorted container, or can I also use the static find method in the STL algorithms? My hunch is that using the static version will use a linear search instead of a binary search like I want.

    Read the article

  • Interview - Program on Computer

    - by Gilad Naor
    Spent some time searching, couldn't find exactly what I'm after. We like giving hands-on programming exercises as part of the interview process. The interviewee gets a laptop, with the editor and compiler of his choice. He or she then get a programming exercise and has about an hour to code it. Depending on the nature of the question, internet access is either allowed or forbidden. I'm looking for good general questions for a junior developer. I don't care what language they choose to program in. C++ is as good as Python or Scheme, as long as (s)he can program in it (this rules out "can you write a correct copy-constructor" style questions). I just want to see how they code, if their code is self-documenting, if they write tests, check edge-cases, etc. What kind of questions would you ask?

    Read the article

  • Concepts a web application developer should know?

    - by iama
    I think it is imperative for web application developers to know the answers surrounding the following general questions on web development irrespective of the programming language/framework used. What authentication mechanisms HTTP offer & what are their pros and cons? Why should one go for FORMS authentication? How to secure authentication or for that matter any transactions via HTTP? How to maintain state in HTTP? What are the downsides to maintaining state via cookie & what happens when browsers disable them? Security issues like cross site scripting, session hijacking etc. What other questions a web developer should have answers for similar to the ones above that are programming language/web framework agnostic?

    Read the article

  • How closely related is music composition to coding?

    - by ehsanul
    It seems to me as if there are a higher proportion of musicians in the programming field than in the general public. Maybe it's just an illusion caused by the fact that I'm an amateur guitarist myself, so I tend to notice coding musicians (or musical coders?) more. But I wonder if there really is some connection. Perhaps a shared set of skills or an innate quality that makes it more likely for someone who enjoys programming to also enjoy playing and composing music. How closely related is music composition to coding? I'd especially like to hear from the musicians around here.

    Read the article

  • innovation for technical high school

    - by gnuze
    I work in a high school in Italy. Our goal is forming computer programmers in 5 years. Nowaday, we teach vb.net on Win ( desktop applications using ADO on Access ), C on linux ( process, threads ) , C++ on Linux ( sockets TCP/UDP with UML ), and a bit of ASP.net, flash programming, PHP, Joomla and PIC Microcontrollers. We are looking for something innovative to add in our programs of study, but every teacher have a different point of view: we are debating about python, C#, Arduino, Silverlight and smartphones programming. Any suggestions? Tx in advance.

    Read the article

  • CSS - changing the font color for a from select option in firefox

    - by Mick
    I'm building a website for my church, and I'm teaching myself all about web design along the way. http://www.wilmingtonchurchofgod.org/contact_us.html is the link where you can see my issue. If you look at that page in firefox, and you click the select part of the form (next to, "Who would you like to contact?") you will see that when you hover over a choice, the font is white. I have tried various things to fix this, but can't find a solution. This seems to be specific to Firefox. Here is the relevant CSS. input, textarea, select, option{ padding: 6px; border: solid 1px #E5E5E5; outline: 0; font: normal 13px/100% Verdana, Tahoma, sans-serif; width: 200px; background: #FFFFFF url(images/from-grad.jpg) left top repeat-x; background: -webkit-gradient(linear, left top, left 25, from(#FFFFFF), color-stop(4%, #EEEEEE), to(#FFFFFF)); background: -moz-linear-gradient(top, #FFFFFF, #EEEEEE 1px, #FFFFFF 25px); box-shadow: rgba(0,0,0, 0.15) 0px 0px 8px; -moz-box-shadow: rgba(0,0,0, 0.15) 0px 0px 8px; -webkit-box-shadow: rgba(0,0,0, 0.15) 0px 0px 8px; } option{ padding:0px; } textarea { width: 400px; max-width: 400px; height: 150px; line-height: 150%; } input:hover, textarea:hover, input:focus, textarea:focus{ border-color: #C9C9C9; -webkit-box-shadow: rgba(0, 0, 0, 0.15) 0px 0px 8px; -moz-box-shadow: rgba(0,0,0, 0.15) 0px 0px 8px; } option:hover, option:focus, select:hover, select:focus { color: black; border-color: #C9C9C9; -webkit-box-shadow: rgba(0, 0, 0, 0.15) 0px 0px 8px; -moz-box-shadow: rgba(0,0,0, 0.15) 0px 0px 8px; } Another side note is that I can't get any background gradient at all to show up on Google Chome (yet it does on Safari and they are supposed to use the same kit?) Any help with these two things would be greatly appreciated.

    Read the article

  • Linux periodically "losing" ability to connect to server via SSH?

    - by gct
    I know this isn't exactly a programming question, but it popped up in my use of git for programming projects at least. I've got a web server that I use to host my git repos on, but my ubuntu box seems to "lose" the ability to connect to it via SSH. I'll get a "connection refused" error when I try to ssh or use git. Rebooting my local machine will fix the problem, but only temporarily. I can still connect to the web interface just fine, and the problem manifests with other servers as well. I've been working around it by pulling my changes over to my laptop and pushing from there, but that's sub-optimal as you can imagine. Has anyone seen something like this? I'd be tempted to say it's some kind of IP caching problem, but I can't connect even using the IP address of the server directly... Running Ubuntu 9.04

    Read the article

  • D3 fisheye on width on bar chart

    - by Dexter Tan
    i have been trying to create a vertical bar chart with a d3 fisheye cartesian distortion with only the x-axis being distorted. I have succeeded in distorting the x position of the vertical bars on mouseover with the following code: var maxMag = d3.max(dataset, function(d) { return d.value[10]; }); var minDate = d3.min(dataset, function(d) { return new Date(d.value[1], d.value[2]-1, d.value[3]).getTime(); }); var maxDate = d3.max(dataset, function(d) { return new Date(d.value[1], d.value[2]-1, d.value[3]).getTime(); }); var yScale = d3.scale.linear().domain([0, maxMag]).range([0, h]); var xScale = d3.fisheye.scale(d3.scale.linear).domain([minDate, maxDate]).range([0, w]).focus(w/2); var bar = svg.append("g") .attr("class", "bars") .selectAll(".bar") .data(dataset) .enter().append("rect") .attr("class", "bar") .attr("y", function(d) { return h - yScale(d.value[10]); }) .attr("width", w/dataset.length) .attr("height", function(d) { return yScale(d.value[10]); }) .attr("fill", function(d) { return (d.value[10] <= 6? "yellow" : "orange" ); }) .call(position); // Positions the bars based on data. function position(bar) { bar.attr("x", function(d) { var date = null; if (d.date != null) { date = d.date; } else { date = new Date(d.value[1],0,1); if (d.value[2] != null) date.setMonth(d.value[2]-1); if (d.value[3] != null) date.setMonth(d.value[3]); d.date = date; } return xScale(date.getTime()); }); } svg.on("mousemove", function() { var mouse = d3.mouse(this); xScale.distortion(2.5).focus(mouse[0]); bar.call(position); }); However at this point, applying fisheye on the width remains a mystery to me. I have tried several methods like using a fisheye scale for width however it does not work as expected. What i wish to do is to have the width of a bar expand on mouseover, the same way a single vertical bar is singled out on mouseover with the cartesian distortion. Any clues or help will be much appreciated! edit: http://dexter.xumx.me to view the visualisation i am talking about for easier understanding!

    Read the article

  • How to do run length encoding?

    - by Phoenix
    I have a long string for example it could be "aaaaaabbccc". Need to represent it as "a6b2c3". What's the best way to do this ? I could do this in linear time by comparing characters and incrementing counts and then replacing the counts in the array, using two indexes in one pass. Can you guys think of a better way than this? Are any of the encoding techniques going to work here ?

    Read the article

  • Number of different elements in an array.

    - by AB
    Is it possible to compute the number of different elements in an array in linear time and constant space? Let us say it's an array of long integers, and you can not allocate an array of length sizeof(long). P.S. Not homework, just curious. I've got a book that sort of implies that it is possible.

    Read the article

  • Does Python/Scipy have a firls( ) replacement (i.e. a weighted, least squares, FIR filter design)?

    - by delicasso
    I am porting code from Matlab to Python and am having trouble finding a replacement for the firls( ) routine. It is used for, least-squares linear-phase Finite Impulse Response (FIR) filter design. I looked at scipy.signal and nothing there looked like it would do the trick. Of course I was able to replace my remez and freqz algorithsm, so that's good. On one blog I found an algorithm that implemented this filter without weighting, but I need one with weights. Thanks, David

    Read the article

  • UIImageView "Sprite Movement" How?

    - by Tate Allen
    Hi all, I am trying to make a game for the iPhone/iPod Touch. I am somewhat new to iPhone programming and extremely new to iPhone game programming so try to bear with me if this is a stupid question. How to I make my character, a UIImageView, move to the right or left, along the x axis. Just a simple translation across the screen. This is very frustrating so if you could link me to a tutorial or something like that, it would be much appreciated. Thanks in advance, Tate

    Read the article

  • Text Gradient whith sIFR 3

    - by andreeib
    Hi, I want to use sIFR 3 to add a simple linear gradient filter to a text, I can't find this in the ducumentation hope you guys can give me some help. I found an article that show's how to do this but requiers the modification of the flash file and that's not what I want to do. I looked in the sIFR documentaion and I didn't found a Gradient filter, I hope this effect can be made simple using the sIFR filters. Thank's

    Read the article

  • Visual Studio CLR project

    - by Vit
    Hi, so I wanted to try my first CLR project in Visual C++. So I created console project, but since every tutorial I found about CLR programming was using C#, or windows forms, I just tried writing standart c++ Hello Word app using iostream (I think code isnt needed in this case) but I though it will give me some compile error, since iostream uses precompiled functions, and CLR app compiles into MSIL. I assumed that CLR programming using C++ means just using C++ syntax, but different functions for I/O and so. So, basicly, what I want to ask is, can any native console C++ app be compiled into MSIL and run by .NET framework?

    Read the article

< Previous Page | 265 266 267 268 269 270 271 272 273 274 275 276  | Next Page >